Definition of Prime meridian. Meaning of Prime meridian. Synonyms of Prime meridian

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Definition of Prime meridian

Prime meridian
Prime and ultimate ratio. (Math.). See Ultimate. Prime conductor. (Elec.) See under Conductor. Prime factor (Arith.), a factor which is a prime number. Prime figure (Geom.), a figure which can not be divided into any other figure more simple than itself, as a triangle, a pyramid, etc. Prime meridian (Astron.), the meridian from which longitude is reckoned, as the meridian of Greenwich or Washington. Prime minister, the responsible head of a ministry or executive government; applied particularly to that of England. Prime mover. (Mech.) (a) A natural agency applied by man to the production of power. Especially: Muscular force; the weight and motion of fluids, as water and air; heat obtained by chemical combination, and applied to produce changes in the volume and pressure of steam, air, or other fluids; and electricity, obtained by chemical action, and applied to produce alternation of magnetic force. (b) An engine, or machine, the object of which is to receive and modify force and motion as supplied by some natural source, and apply them to drive other machines; as a water wheel, a water-pressure engine, a steam engine, a hot-air engine, etc. (c) Fig.: The original or the most effective force in any undertaking or work; as, Clarkson was the prime mover in English antislavery agitation. Prime number (Arith.), a number which is exactly divisible by no number except itself or unity, as 5, 7, 11. Prime vertical (Astron.), the vertical circle which passes through the east and west points of the horizon. Prime-vertical dial, a dial in which the shadow is projected on the plane of the prime vertical. Prime-vertical transit instrument, a transit instrument the telescope of which revolves in the plane of the prime vertical, -- used for observing the transit of stars over this circle.

Meaning of Prime meridian from wikipedia

- A prime meridian is the meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian...
- 0°00′05.31″W / 51.4778111°N 0.0014750°W / 51.4778111; -0.0014750 The prime meridian is a geographical reference line that p****es through the Royal Observatory...
- measured in angular degrees east or west of the Prime Meridian. The position of a point along the meridian is given by that longitude and its latitude, measured...
- Null Island is a name for the point on the Earth's surface where the prime meridian and the equator cross, located in international waters in the Gulf of...
- The 180th meridian or antimeridian is the meridian 180° both east and west of the Prime Meridian, with which it forms a great circle dividing the earth...
- The Washington meridians are four meridians that were used as prime meridians in the United States and p**** through Washington, D.C.. The four which have...
- International Meridian Conference was a conference held in October 1884 in Washington, D.C., in the United States, to determine a prime meridian for international...
- long-standing rival to the Greenwich meridian as the prime meridian of the world. The "Paris meridian arc" or "French meridian arc" (French: la Méridienne de...
- Ante Meridian is a misspelling of: Antimeridian, a meridian at 180° from another or the meridian opposite the prime meridian Ante meridiem, normally abbreviated...
- 0° The IERS Reference Meridian (IRM), also called the International Reference Meridian, is the prime meridian (0° longitude) maintained by the International...
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